High school students who get too little sleep are more likely than others to use drugs, drink alcohol or attempt suicide, U.S. researchers warn.

And while teenagers need eight to 10 hours of sleep nightly, only 30 percent of students report getting that amount, according to survey data collected by the U.S. Centers for Disease Control and Prevention.

“Those reporting fewer hours of sleep were significantly more likely to report each type of risk-taking behavior that was studied,” said Matthew Weaver, lead researcher on the new report. He’s an epidemiologist at Brigham and Women’s Hospital’s division of sleep and circadian disorders, in Boston.

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